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Business Combinations - Additional Information (Details)
$ in Thousands, € in Millions
3 Months Ended
Jul. 13, 2018
EUR (€)
Jul. 13, 2018
USD ($)
Jul. 06, 2018
USD ($)
Mar. 16, 2018
USD ($)
Mar. 09, 2018
USD ($)
Mar. 31, 2019
USD ($)
Jul. 13, 2018
USD ($)
Business Acquisition [Line Items]              
Integration costs for acquisitions           $ 800  
Laser Control Systems Limited              
Business Acquisition [Line Items]              
Purchase price, including contingent consideration         $ 1,700    
Potential contingent consideration         700    
Deferred income tax liabilities         $ 0    
Photocore AG              
Business Acquisition [Line Items]              
Purchase price, net of cash acquired       $ 2,400      
Deferred income tax liabilities       $ 0      
Lanmark Controls              
Business Acquisition [Line Items]              
Purchase price, including contingent consideration     $ 6,300        
Potential contingent consideration     1,000        
Deferred income tax liabilities     $ 325        
Opto-Tech SRL              
Business Acquisition [Line Items]              
Purchase price, including contingent consideration € 18.5 $ 21,600          
Potential contingent consideration € 4.0           $ 4,700
Deferred income tax liabilities           1,900 $ 1,876
Goodwill increase           4,500  
Customer relationship | Opto-Tech SRL              
Business Acquisition [Line Items]              
Decrease in intangible assets           $ 2,600